Buick GM Buick Big-Block 400, Engine
| Engine capacity | 6,554 cm³ |
| Maximum power (range), hp | 340 - 390 |
| Maximum torque, N*m (kg*m) at rpm. | 597 (61) / 3200 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 22.8 - 27.6 |
| Engine type | V-shaped, 8-cylinder |
| Additional engine information | Rochester 4MV 4-barrel carburetor |
| Maximum power, hp (kW) at rpm | 340 (250) / 5000 |
| Compression Ratio (Range) | 10.25 - 11 |
| Cylinder diameter (range), mm | 102.62 |
| Piston stroke (range), mm | 99.06 |
| Valve drive | OHV |
| Number of valves per cylinder (range) | 2 |